sqlmapproject/sqlmap · error · InterfaceError

truncated DataRow

Error message

truncated DataRow

What it means

Error "truncated DataRow" thrown in sqlmapproject/sqlmap.

Source

Thrown at extra/dbwire/postgres.py:197

                    description, rows, rowcount, off = [], [], -1, 2
                    for _ in range(count):
                        end = payload.index(b"\x00", off)
                        name = payload[off:end].decode("utf-8", "replace")
                        off = end + 1
                        (typeoid,) = struct.unpack("!I", payload[off + 6:off + 10])
                        off += 18  # tableoid4 colno2 typeoid4 typelen2 typmod4 format2
                        description.append((name, typeoid, None, None, None, None, None))
                elif mtype == b"D":  # DataRow
                    (count,) = struct.unpack("!H", payload[:2])
                    off, row = 2, []
                    for col in range(count):
                        (vlen,) = struct.unpack("!i", payload[off:off + 4])
                        off += 4
                        if vlen == -1:
                            row.append(None)
                        else:
                            if off + vlen > len(payload):
                                raise InterfaceError("truncated DataRow")
                            raw = payload[off:off + vlen]
                            off += vlen
                            if description and col < len(description) and description[col][1] == _OID_BYTEA:
                                row.append(_decode_bytea(raw))  # bytes so sqlmap hex-encodes it (like the native driver)
                            else:
                                try:
                                    row.append(raw.decode("utf-8"))
                                except UnicodeDecodeError:
                                    row.append(raw)  # non-UTF-8 (e.g. a SQL_ASCII db): keep bytes (hex-encoded), not lossy U+FFFD
                    rows.append(tuple(row))
                elif mtype == b"C":  # CommandComplete ("SELECT 3", "INSERT 0 1", ...)
                    tag = payload[:-1].decode("utf-8", "replace").split()
                    if tag and tag[-1].isdigit():
                        rowcount = int(tag[-1])
                elif mtype == b"G":  # CopyInResponse - server now waits for client CopyData; refuse to avoid a deadlock
                    _send(self._sock, b"f", b"COPY FROM STDIN is not supported\x00")  # CopyFail
                elif mtype == b"E":  # ErrorResponse
                    error = _error_message(payload)

View on GitHub (pinned to 0a35b20e39)

When it happens

Trigger: Thrown at extra/dbwire/postgres.py:197 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of sqlmapproject/sqlmap@0a35b20e39 (2026-08-26). Data as JSON: /api/errors/0a3f3b6e45bd3a9b. Report an issue: GitHub.